Bike shelf



FIG. 1 is a top, front, and right side perspective view of a bike shelf showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a right side elevational view thereof. 

The ornamental design for a bike shelf, as shown and described. 